Home / 31,370.56-43,272.35-18,615.34

Finding the Fourth Proportional to 31,370.56, 43,272.35 and 18,615.34

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Solution

The fourth proportional to 31,370.56, 43,272.35 and 18,615.34 is: 25,677.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.56 : 43,272.35 = 18,615.34 : x
  2. Step 2: Convert to fraction form
    31,370.56/43,272.35 = 18,615.34/x
  3. Step 3: Cross multiply
    31,370.56x = 43,272.35 × 18,615.34
  4. Step 4: Simplify right side
    31,370.56x = 805,529,347.62
  5. Step 5: Solve for x
    x = 805,529,347.62/31,370.56
  6. Step 6: Final answer
    x = 25,677.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.